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Dissimilar joining of AISI 304L/St37 steels by TIG welding process

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

In present work the weldings of an austenitic stainless steel (AISI 304L) and a ferritic carbon steel (St37) were conducted by tungsten inert gas (TIG) welding process using four different austenitic filler metals, namely ER308L, ER309L, ER316L and ER310. Microstructure characteristics and mechanical properties of the weldments were studied using optical and scanning electron microscopy, ferrit-ometry, hardness, tensile and impact tests. The ferrite number (N F) of the weldments made by different electrodes varies between 0.5 and 9.5. It was found that the increase in amount of delta ferrite in the microstructure of the weld metals, causes the decrease of the impact toughness of the weldments. It seems that using ER309L and ER316L electrodes can provide a good combination between the mechanical and metallurgical properties of the joint in AISI 304L/St37 dissimilar welding.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, School of Engineering, Shiraz University, Zand Blvd, 71348-51154, Shiraz, Iran

    A. R. Khalifeh & A. Dehghan

  2. Department of Materials Science and Engineering, Faculty of Engineering, Shahid Chamran University, 61357-83151, Ahvaz, Iran

    E. Hajjari

Authors
  1. A. R. Khalifeh
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  2. A. Dehghan
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  3. E. Hajjari
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Correspondence to E. Hajjari.

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Khalifeh, A.R., Dehghan, A. & Hajjari, E. Dissimilar joining of AISI 304L/St37 steels by TIG welding process. ACTA METALL SIN 26, 721–727 (2013). https://doi.org/10.1007/s40195-013-0194-9

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  • DOI: https://doi.org/10.1007/s40195-013-0194-9

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